When Mozilla moved from CVS to Mercurial in 2007, the CVS revision history regretfully wasn't imported. A git repository had since been created with the combine

When Mozilla moved from CVS to Mercurial in 2007, the CVS revision history regretfully wasn't imported. A git repository had since been created with the combined CVS and Mercurial history, but the Mercurial repository of still the official source of truth. https://gregoryszorc.com/blog/2015/05/18/firefox-mercurial-repository-with-cvs-history/ https://gregoryszorc.com/blog/2015/05/18/firefox-mercurial-r...